Atossa TherapeuticsATOS
13F holders, Q3 2025 (September 30)67holders −16
9new positions
25sold out
3famous investors
$0.87avg. 13F price*
At the end of Q3 2025, 67 institutions reported holding Atossa Therapeutics Inc. (ATOS) in their 13F filings, down 16 from Q2 2025. 9 opened new positions and 25 sold out. The largest holders were Vanguard Group Inc. ($5.3M), Ameriprise Financial Inc. ($2.6M) and BlackRock, Inc. ($1.7M). 3 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Atossa Therapeutics Inc.
- CUSIP
- 04962H506
- Latest filing quarter
- Q4 2025
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 9 | $281K |
| Exits | 25 | $1.1M |
All 13F filers, Q2 2025 → Q3 2025: 1,368,530 shares bought and 3,336,180 shares sold, net −1,967,650 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 67 holders
| Vanguard Group Inc. | 0.00% | Add +4.2% | 6,078,844 | $5.3M |
| Ameriprise Financial Inc. | 0.00% | Reduce -0.7% | 2,951,505 | $2.6M |
| BlackRock, Inc. | 0.00% | Reduce -7.0% | 1,997,627 | $1.7M |
| Millennium Management | 0.00% | Reduce -18.5% | 1,668,648 | $1.4M |
| Renaissance Technologies | 0.00% | Reduce -14.5% | 1,548,663 | $1.3M |
| Geode Capital Management, LLC | 0.00% | Add +4.8% | 1,362,282 | $1.2M |
| State Street Corp. | 0.00% | Reduce -12.0% | 454,495 | $394K |
| Gsa Capital Partners LLP | 0.02% | Add +509.0% | 310,754 | $269K |
| Northern Trust Corp. | 0.00% | No change | 263,377 | $228K |
| Citadel Advisors | 0.00% | Add +203.0% | 263,369 | $228K |
| UBS Group AG | 0.00% | Reduce -36.8% | 260,722 | $226K |
| Squarepoint Ops LLC | 0.00% | Add +39.9% | 253,343 | $220K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Add +25.1% | 248,614 | $216K |
| Susquehanna International Group, LLP | 0.00% | Reduce -19.8% | 219,602 | $190K |
| Graham Capital Management, L.P. | 0.01% | New | 165,446 | $143K |
| Jane Street Group, LLC | 0.00% | Reduce -64.6% | 162,428 | $141K |
| Bank of America Corp. | 0.00% | Add +55.8% | 155,169 | $135K |
| Qube Research & Technologies Ltd | 0.00% | Reduce -66.7% | 138,643 | $120K |
| Morgan Stanley | 0.00% | Reduce -30.2% | 112,348 | $97K |
| Acadian Asset Management LLC | 0.00% | New | 97,287 | $82K |
| Marshall Wace, LLP | 0.00% | Add +534.9% | 85,076 | $74K |
| Charles Schwab Investment Management Inc. | 0.00% | No change | 80,000 | $69K |
| Commonwealth Equity Services, LLC | 0.00% | No change | 46,001 | $40K |
| Point72 Asia (Singapore) Pte. Ltd. | 0.01% | Reduce -50.0% | 44,106 | $38K |
| JPMorgan Chase & Co. | 0.00% | Add +1294.2% | 38,215 | $33K |
| Gallagher Capital Advisors, LLC | 0.02% | New | 31,575 | $27K |
| Regions Financial Corp. | 0.00% | No change | 30,000 | $26K |
| LPL Financial LLC | 0.00% | Add +2.5% | 28,556 | $25K |
| XTX Topco Ltd | 0.00% | Add +98.2% | 24,849 | $22K |
| Sigma Planning Corp | 0.00% | New | 24,000 | $21K |
| PFG Investments, LLC | 0.00% | No change | 21,250 | $18K |
| LVM Capital Management Ltd. | 0.00% | No change | 21,000 | $18K |
| Wolverine Trading, LLC | 0.00% | Reduce -2.2% | 18,342 | $16K |
| NorthRock Partners, LLC | 0.00% | No change | 16,750 | $15K |
| Jain Global LLC | 0.00% | Reduce -86.4% | 16,707 | $14K |
| HRT Financial LP | 0.00% | Reduce -82.2% | 16,932 | $14K |
| DNB Asset Management AS | 0.00% | No change | 15,600 | $14K |
| Victory Capital Management Inc. | 0.00% | Reduce -3.5% | 14,864 | $13K |
| Bank of New York Mellon Corp | 0.00% | No change | 11,147 | $10K |
| J. L. Bainbridge & Co., Inc. | 0.00% | No change | 11,121 | $10K |
| Raymond James Financial Inc. | 0.00% | Reduce -15.6% | 10,815 | $9K |
| Janney Montgomery Scott LLC | 0.00% | No change | 10,000 | $9K |
| Focus Financial Network, Inc. | 0.00% | No change | 10,150 | $9K |
| Osaic Holdings, Inc. | 0.00% | No change | 8,847 | $7K |
| FMR LLC | 0.00% | Reduce -56.8% | 7,365 | $6K |
| NewEdge Advisors, LLC | 0.00% | No change | 5,000 | $4K |
| Rockefeller Capital Management L.P. | 0.00% | New | 5,000 | $4K |
| Huntington National Bank | 0.00% | New | 3,000 | $3K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -81.3% | 2,516 | $2K |
| Harbour Investments, Inc. | 0.00% | No change | 1,711 | $1K |
| TD Waterhouse Canada Inc. | 0.00% | No change | 1,555 | $1K |
| SBI Securities Co., Ltd. | 0.00% | Add +0.1% | 1,566 | $1K |
| BNP Paribas Financial Markets | 0.00% | Reduce -50.5% | 1,490 | $1K |
| Royal Bank of Canada | 0.00% | Reduce -90.4% | 745 | $1K |
| Allworth Financial LP | 0.00% | No change | 702 | $609 |
| Jones Financial Companies LLLP | 0.00% | No change | 700 | $601 |
| Nisa Investment Advisors, LLC | 0.00% | Reduce -62.3% | 350 | $303 |
| Lanark Financial, Inc. | 0.00% | New | 150 | $130 |
| Wells Fargo & Company | 0.00% | Reduce -84.7% | 83 | $72 |
| Point72 (DIFC) Ltd | 0.00% | Reduce -99.0% | 82 | $71 |
| Clearstead Advisors, LLC | 0.00% | No change | 70 | $61 |
| Arax Advisory Partners | 0.00% | New | 42 | $36 |
| True Wealth Design, LLC | 0.00% | Reduce -65.9% | 29 | $26 |
| EverSource Wealth Advisors, LLC | 0.00% | Reduce -99.1% | 2 | $2 |
| Hantz Financial Services, Inc. | 0.00% | No change | 82 | $0 |
| Simplex Trading, LLC | 0.00% | New | 322 | $0 |
| Cwm, LLC | 0.00% | Reduce -96.3% | 225 | $0 |
"% of holder's portfolio" is ATOS's weight in each manager's 13F, not the share of Atossa Therapeutics Inc. the manager owns.